package cn.sjw.mapper;

import cn.sjw.pojo.Books;

import java.util.List;

public interface BooksMapper {
     //增加一个Book  
     int addBook(Books book);
    //根据id删除一个Book    
     int deleteBookById(int id);
    //更新Book    
     int updateBook(Books books);
    //根据id查询,返回一个Book    
     Books queryBookById(int id);
    //查询全部Book,返回list集合    
     List<Books> queryAllBook();
}
